Multi-channel output stage base assembly

Abstract

The utility model relates to the technical field of battery packs, in particular to a multi-channel output stage base assembly which comprises a base body, an insert nut and a high-voltage protective cover, a rectangular groove is formed in the top of the base body, and the insert nut is embedded in the groove bottom of the rectangular groove; an inverted buckle is arranged at the bottom of the base body, and the inverted buckle is used for fixedly inserting the base body into a box body; openings are formed in the three groove walls of the rectangular groove, and the inner sides of the openings are used for allowing high-voltage conductors to penetrate. According to the multi-channel output stage base assembly, the base body of the multi-channel output stage base assembly is installed inside the box body through the inverted buckle, and the multi-channel output stage base assembly is convenient and fast to use. Meanwhile, by arranging the openings in three directions, the high-voltage conductors can be conveniently arranged in different opening directions according to the space arrangement in the battery pack, the flexibility is good, and the problems that an existing output stage base is tedious in installation and the arrangement direction of the high-voltage conductors is not flexible are solved.

Description

Technical Field

[0001] This utility model relates to the field of battery pack technology, and in particular to a multi-channel output stage base assembly. Background Technology

[0002] In the high-voltage electrical system of a power battery pack, the connection between the output stage aluminum busbar and the high-voltage conductor (copper or aluminum busbar) is usually achieved by bolt fastening. The connection area must be equipped with a protective structure to ensure insulation safety. A common solution is to fix the bolt connection points using an injection-molded output stage base. The base is rigidly connected to the internal structure of the housing to ensure the stability of the bolt fastening. Then, a matching high-voltage protective cover is used to cover the bolt fastening area to prevent foreign object intrusion or short circuits caused by metal contact.

[0003] The utility model with publication number CN220341455U discloses an output stage base and a battery pack. The output stage base includes a bottom shell with a mounting cavity having an open top; a mounting seat disposed in the mounting cavity, the mounting seat being adjustable in position along the X and Z directions of the bottom shell; and a connecting part for connecting the output stage busbar of the battery module and an external conductive busbar, the connecting part being slidably disposed on the mounting seat along the Y direction of the bottom shell.

[0004] As described above, the output stage base is fixed to the internal structure of the enclosure with bolts, making installation cumbersome and inconvenient for workers. Furthermore, the limited number of high-voltage conductor outlets on the output stage base restricts the flexibility of high-voltage conductor placement. Utility Model Content

[0005] In view of this, this utility model proposes a multi-channel output stage base assembly, whose base body is installed inside the housing by inverting, which is convenient and quick. At the same time, by setting three openings, it is easy to select different opening directions to arrange the high-voltage conductor according to the internal space of the battery pack, which provides good flexibility and solves the problems of cumbersome installation and inflexible arrangement of high-voltage conductors in existing output stage bases.

[0006] The technical solution of this utility model is implemented as follows:

[0007] This utility model provides a multi-channel output stage base assembly, including a base body and an insert nut, wherein...

[0008] The top of the base body is provided with a rectangular groove, and the insert nut is embedded in the bottom of the rectangular groove;

[0009] The bottom of the base body is provided with an inverted buckle, which is used to insert and fix the base body inside the box.

[0010] The rectangular groove has openings on all three walls, and the inside of the openings is used to insert high-voltage conductors.

[0011] Based on the above technical solutions, preferably, a countersunk hole is provided on the bottom of the rectangular groove, wherein,

[0012] The insert nut is embedded in the countersunk hole;

[0013] The top of the insert nut is aligned with the bottom of the rectangular groove.

[0014] Based on the above technical solutions, preferably, the bottom of the base body is provided with an annular groove along the circumference of the insert nut, wherein,

[0015] The upper end of the inverted buckle is positioned within the annular groove.

[0016] Based on the above technical solution, preferably, the undercut is provided with three, wherein,

[0017] The three buckles are arranged in a triangular shape along the circumference of the annular groove.

[0018] Based on the above technical solutions, preferably, the buckle includes an elastic plate and a limiting block, wherein,

[0019] The upper end of the elastic plate is fixedly connected to the bottom of the annular groove, and the lower end extends downward out of the annular groove.

[0020] The limiting block is located on one side of the lower end of the elastic plate.

[0021] Based on the above technical solutions, preferably, the lower end of the limiting block is wedge-shaped.

[0022] Based on the above technical solution, preferably, a weight-reducing hole is provided on the bottom of the rectangular groove, wherein,

[0023] The weight-reducing hole is connected to the annular groove.

[0024] Based on the above technical solutions, preferably, it also includes a high-pressure protective cover, wherein the high-pressure protective cover includes a cover body, wherein...

[0025] The cover is fastened to the top of the base body;

[0026] The bottom of the cover is provided with a mating groove, and three of the groove walls are turned outward vertically to form folded edges, while a notch is provided on the other groove wall;

[0027] The three folded edges correspond one-to-one with the three openings.

[0028] Based on the above technical solutions, preferably, the side of the cover is provided with multiple hanging ears, wherein,

[0029] The lower end of the hook extends downward to the side of the base body;

[0030] The lower end of the ear is provided with a hanging hole on the side;

[0031] The base body has a protrusion on its side corresponding to the position of the hanging hole;

[0032] The upper end of the protrusion is wedge-shaped and is embedded in the hanging hole.

[0033] Based on the above technical solutions, preferably, the lower end of the hanging ear is bent outwards towards the base body in a pry shape.

[0034] The multi-channel output stage base assembly of this utility model has the following advantages over the prior art:

[0035] (1) By setting an inverted buckle to insert and fix the base body inside the box, the output stage base is more convenient and quick to install.

[0036] (2) By setting openings on the three walls of the rectangular slot, the output stage base has openings in three directions, which makes it easy to select different opening directions to arrange high voltage conductors according to the space arrangement inside the battery pack, and has good flexibility.

[0037] (3) By setting three inverted buckles arranged in a triangular shape along the circumference of the annular groove, the installation is not easily reversed, which is conducive to the smooth progress of subsequent assembly.

[0038] (4) By setting weight reduction holes and annular grooves, it is easy to reduce the weight of the output stage base and save injection molding materials.

[0039] (5) By setting the folded edge, it is easy to cover the exposed part of the high voltage conductor, making it less likely to be electrocuted during manual assembly or maintenance, which is beneficial to personal safety protection. Attached Figure Description

[0040] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0041] Figure 1 This is a perspective view of a multi-channel output stage base assembly according to the present invention;

[0042] Figure 2 This is a perspective view of a multi-channel output stage base assembly according to the present invention.

[0043] Figure 3 This is a perspective view of a high-pressure protective cover according to the present invention;

[0044] Figure 4 This is an assembly drawing of the base body and the cover body of this utility model;

[0045] Figure 5 This is a diagram showing the usage state of a multi-channel output stage base assembly according to this utility model;

[0046] Figure 6 This is a schematic diagram of the mounting surface structure of an existing battery box;

[0047] In the diagram: 1. Base body; 2. Insert nut; 3. Cover; 11. Overhang; 12. Protrusion; 31. Folded edge; 32. Hanging lug; 101. Rectangular groove; 102. Annular groove; 111. Elastic plate; 112. Limiting block; 301. Mating groove; 1011. Opening; 1012. Countersunk hole; 1013. Weight reduction hole; 3011. Notch; 3201. Hanging hole; a. Countersunk hole; b. Shackle hole. Detailed Implementation

[0048] The technical solutions of this utility model will be clearly and completely described below with reference to specific embodiments. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0049] like Figure 1-6 As shown, the present invention provides a multi-channel output stage base assembly, including a base body 1, an insert nut 2, and a high-voltage protection cover, wherein the high-voltage protection cover includes a cover body 3.

[0050] The base body 1 has a rectangular groove 101 on its top, with an insert nut 2 embedded in the bottom of the groove. The bottom of the base body 1 has an inverted buckle 11 for securing it inside the housing. Each of the three walls of the rectangular groove 101 has an opening 1011, the inner side of which is used to insert a high-voltage conductor. These three openings 1011 provide the output stage base with openings in three directions, allowing for flexible placement of the high-voltage conductor by selecting different opening directions based on the space within the battery pack.

[0051] When installing the output stage base, the aforementioned inverted clip 11 makes the installation of the output stage base more convenient and quick.

[0052] In the above structure, such as Figure 1 As shown, a countersunk hole 1012 is provided on the bottom of the rectangular groove 101, in which the insert nut 2 is embedded; the top of the insert nut 2 is aligned with the bottom of the rectangular groove 101. This makes the bottom of the rectangular groove 101 flat, which is convenient for placing the output stage aluminum bar flat.

[0053] like Figure 2 As shown, the base body 1 is rectangular, and an annular groove 102 is provided on its bottom along the circumference of the insert nut 2. The upper end of the undercut 11 is located in the annular groove 102. In addition, a weight-reducing hole 1013 is provided on the bottom of the rectangular groove 101, which is connected to the annular groove 102. This shape is integrally injection molded, the material is PBT+GF30, and the thickness is 2mm. Due to the provision of the weight-reducing hole 1013 and the annular groove 102, the weight of the output stage base is reduced, and injection molding material can be saved. In addition, after injection molding, the annular groove 102 has a rectangular perimeter, and its inner side has an island portion. The upper end of the island portion is connected to the bottom of the annular groove 102, and the inner side of the island portion is used to provide the countersunk hole 1012.

[0054] like Figure 2 As shown, three inverted buckles 11 are provided, arranged in a triangular shape along the circumference of the annular groove 102. This serves to prevent incorrect installation and makes it less likely for the output stage base to be installed backwards, facilitating smooth subsequent assembly. Specifically, an inverted buckle 11 is provided at the center of each of the three right-angled sides of the rectangular base body 1, thus achieving a triangular arrangement of the three inverted buckles 11.

[0055] The inverted buckle 11 includes an elastic plate 111 and a limiting block 112. The upper end of the elastic plate 111 is fixedly connected to the bottom of the annular groove 102, and the lower end extends downward out of the annular groove 102. The limiting block 112 is disposed on one side of the lower end of the elastic plate 111. The lower end of the limiting block 112 is wedge-shaped.

[0056] To facilitate the installation of the aforementioned inverted buckle 11, a hanging ring structure that mates with the inverted buckle 11 should be provided on the mounting surface inside the battery box. For example, Figure 6 As shown, the mounting surface supports the base body 1. A countersunk hole a is provided at the top of the mounting surface, and a shackle hole b is provided on the side along the lateral direction. The shackle hole b and the countersunk hole a are connected. When installing the buckle 11, the elastic plate 111 is inserted into the countersunk hole a, and the limiting block 112 is embedded in the shackle hole b, thus completing the insertion and fixing of the output stage base.

[0057] During disassembly, a screwdriver is inserted into the shackle hole b to push the limit block 112 out of the shackle hole b. Then the elastic plate 111 can be pulled out of the countersunk hole a to disassemble the output stage base.

[0058] When applying, such as Figure 5As shown, a cover 3 needs to be fastened to the top of the base body 1 to cover the opening of the rectangular groove 101. Combined with... Figure 3-4 The side of the cover 3 is provided with multiple hanging ears 32. Figure 3 The image shows four hanging ears 32. The lower end of the hanging ear 32 extends downward to the side of the base body 1; the lower end of the hanging ear 32 is provided with a hanging hole 3201; the side of the base body 1 and the position corresponding to the hanging hole 3201 are provided with a protrusion 12; the upper end of the protrusion 12 is wedge-shaped and the protrusion 12 is embedded in the hanging hole 3201.

[0059] When fastening the cover 3, press the cover 3 onto the top of the base body 1 and insert the protrusion 12 into the hanging hole 3201 to complete the installation. To facilitate disassembly, the lower end of the hanging ear 32 is bent outwards towards the base body 1 in a pry shape, which makes it easy to pry the hanging ear 32 and disengage the protrusion 12 from the hanging hole 3201.

[0060] Furthermore, traditional high-voltage protective covers only serve to protect the area of ​​the insert nut 2, leaving the actual high-voltage conductors (copper or aluminum busbars) partially exposed. For example... Figure 5 As shown, the high-voltage conductor is usually wrapped with an insulating sleeve, and the connection end of the high-voltage conductor extends out of the insulating sleeve to facilitate a tight fit with the output stage aluminum bar. The connection end extending out of the insulating sleeve cannot be entirely located in the rectangular groove 101; part of it will be exposed outside the base body 1. This exposed part is prone to electric shock during manual assembly or maintenance.

[0061] To this end, the cover 3 is provided with a folded edge 31, which covers the exposed parts to prevent electric shock. Specifically, the bottom of the cover 3 is provided with a mating groove 301, and the three groove walls of the mating groove 301 are turned outward vertically to form folded edges 31, and a notch 3011 is provided on the other groove wall; the three folded edges 31 correspond one-to-one with the three openings 1011.

[0062] The cover 3 is made of PC+ABS. The notch 3011 is used to introduce the rectangular slot 101 for the output stage aluminum bar. The folded edge 31 is 5mm long. After assembly, the exposed parts are covered by the folded edge 31, effectively protecting the exposed parts of the high-voltage conductor and avoiding safety accidents such as short circuits in the battery pack caused by accidental human contact.

[0063] The method of using the multi-channel output stage base assembly of this utility model is as follows:

[0064] First, the base body 1 is installed and fixed in the housing by the inverted clip 11. Then, the connection end of the output stage aluminum busbar is introduced into the rectangular groove 101 through the notch 3011. The connection end of the high-voltage conductor (copper busbar or aluminum busbar) is introduced into the rectangular groove 101 through the opening 1011 in a suitable position. After introduction, the connection end of the high-voltage conductor is stacked on top of the connection end of the output stage aluminum busbar. Then, bolts are installed in the insert nut 2 to fix the connection end of the high-voltage conductor and the connection end of the output stage aluminum busbar. Afterward, the cover 3 is pressed onto the top of the base body 1, and the protrusion 12 is inserted into the hanging hole 3201 to complete the installation of the cover 3.

[0065] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A multi-channel output stage base assembly, comprising a base body (1), an insert nut (2), and a high-voltage protection cover, wherein, The top of the base body (1) is provided with a rectangular groove (101), and the insert nut (2) is embedded in the bottom of the rectangular groove (101); The base body (1) is characterized by having an inverted buckle (11) at its bottom, which is used to insert and fix the base body (1) inside the box. The rectangular groove (101) has openings (1011) on all three groove walls, and the inside of the openings (1011) is used to insert high voltage conductors. The high-pressure protective cover includes a cover body (3), wherein... The cover (3) is fastened to the top of the base body (1) and covers the opening of the rectangular groove (101) through the cover (3); The bottom of the cover (3) is provided with a mating groove (301), and the three groove walls of the mating groove (301) are turned outward vertically to form a folded edge (31), and a notch (3011) is provided on the other groove wall. The three folds (31) correspond one-to-one with the three openings (1011).

2. The multi-channel output stage base assembly as described in claim 1, characterized in that: The bottom of the rectangular groove (101) is provided with a countersunk hole (1012), wherein, The insert nut (2) is embedded in the countersunk hole (1012); The top of the insert nut (2) is aligned with the bottom of the rectangular groove (101).

3. The multi-channel output stage base assembly as described in claim 1, characterized in that: The bottom of the base body (1) is provided with an annular groove (102) along the circumference of the insert nut (2), wherein, The upper end of the buckle (11) is disposed in the annular groove (102).

4. The multi-channel output stage base assembly as described in claim 3, characterized in that: The inverted buckle (11) is provided in three parts, among which, The three buckles (11) are arranged in a triangular shape along the circumference of the annular groove (102).

5. The multi-channel output stage base assembly as described in claim 4, characterized in that: The buckle (11) includes a spring plate (111) and a limiting block (112), wherein, The upper end of the elastic plate (111) is fixedly connected to the bottom of the annular groove (102), and the lower end extends downward out of the annular groove (102). The limiting block (112) is located on one side of the lower end of the elastic plate (111).

6. The multi-channel output stage base assembly as described in claim 5, characterized in that: The lower end of the limiting block (112) is wedge-shaped.

7. The multi-channel output stage base assembly as described in claim 3, characterized in that: The bottom of the rectangular groove (101) is provided with a weight-reducing hole (1013), wherein, The weight reduction hole (1013) is connected to the annular groove (102).

8. The multi-channel output stage base assembly as described in claim 1, characterized in that: The side of the cover (3) is provided with a plurality of hanging ears (32), wherein, The lower end of the hook (32) extends downward to the side of the base body (1); The lower end of the ear (32) is provided with a hanging hole (3201). The base body (1) has a protrusion (12) on its side, corresponding to the position of the hanging hole (3201). The upper end of the protrusion (12) is wedge-shaped, and the protrusion (12) is embedded in the hanging hole (3201).

9. A multi-channel output stage base assembly as described in claim 8, characterized in that: The lower end of the hook (32) is bent outwards towards the base body (1) in a pry shape.

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